| **Special Charges (Details) $ in Millions**                                       | 3 Months Ended | 9 Months Ended | 12 Months Ended |
|-----------------------------------------------------------------------------------|----------------|----------------|-----------------|
||
| **Purchased In-Process Research And Development (IPR&D) And Special Charges** |           |           |            |   |   |
| Litigation charges                                                                | $ 3            |           |            |   |   |
| Number of legal settlements | settlement                                          |           |           | 4               |   |   |
| Restructuring-related costs                                                       |           |           | $ 3             |   |   |
| Field Action Costs                                                                |           |           |            |   |   |
| **Purchased In-Process Research And Development (IPR&D) And Special Charges** |           |           |            |   |   |
| Litigation charges                                                                |           |           | 6               | $ 14 |   |
| Loss (benefit) contingency in period                                              | 25             |           | 28              |   |   |
| Field Action Costs | Cost of sales                                                |           |           |            |   |   |
| **Purchased In-Process Research And Development (IPR&D) And Special Charges** |           |           |            |   |   |
| Loss (benefit) contingency in period                                              | 26             |           |            | (7) |   |
| Field Action Costs, Scrapped Inventory and Warranty Costs | Cost of sales         |           |           |            |   |   |
| **Purchased In-Process Research And Development (IPR&D) And Special Charges** |           |           |            |   |   |
| Loss (benefit) contingency in period                                              |           |           | 5               |   |   |
| Field Action Costs, Salvaged Inventory | Cost of sales                            |           |           |            |   |   |
| **Purchased In-Process Research And Development (IPR&D) And Special Charges** |           |           |            |   |   |
| Loss (benefit) contingency in period                                              | (1)            |           | (3)             | (5) |   |
| Field Action Costs, Lower Than Expected Direct Recall Costs | Cost of sales       |           |           |            |   |   |
| **Purchased In-Process Research And Development (IPR&D) And Special Charges** |           |           |            |   |   |
| Loss (benefit) contingency in period                                              |           |           |            | (2) |   |
| Separate Legal Cases in Current Year                                              |           |           |            |   |   |
| **Purchased In-Process Research And Development (IPR&D) And Special Charges** |           |           |            |   |   |
| Litigation settlement gains (losses)                                              |           |           | 19              |   |   |
| Product Liability Claim                                                           |           |           |            |   |   |
| **Purchased In-Process Research And Development (IPR&D) And Special Charges** |           |           |            |   |   |
| Litigation charges                                                                |           | $ 1            |            |   |   |
| March 2010 Securities Class Action                                                |           |           |            |   |   |
| **Purchased In-Process Research And Development (IPR&D) And Special Charges** |           |           |            |   |   |
| Insurance recoveries                                                              |           |           |            | $ 10 |   |
| Customer relationship                                                             |           |           |            |   |   |
| **Purchased In-Process Research And Development (IPR&D) And Special Charges** |           |           |            |   |   |
| Intangible asset impairment charges                                               |           | $ 2            |            |   |   |
| 2012 Business Realignment Restructuring Plan                                      |           |           |            |   |   |
| **Purchased In-Process Research And Development (IPR&D) And Special Charges** |           |           |            |   |   |
| Number of operating divisions | division                                          |           |           |            |   | 2 |
| Minimum | 2016 Initiatives                                                        |           |           |            |   |   |
| **Purchased In-Process Research And Development (IPR&D) And Special Charges** |           |           |            |   |   |
| Expected cost remaining                                                           | 5              |           | 5               |   |   |
| Maximum | 2016 Initiatives                                                        |           |           |            |   |   |
| **Purchased In-Process Research And Development (IPR&D) And Special Charges** |           |           |            |   |   |
| Expected cost remaining                                                           | $ 10           |           | $ 10            |   |   |

| X                                                                                                                                                                                                                                    |
|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
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| - Definition
Amount of gain (loss) recognized in settlement of litigation and insurance claims. Excludes claims within an insurance entity's normal claims settlement process.
+ References
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| - Definition
The amount of impairment loss recognized in the period resulting from the write-down of the carrying amount of an intangible asset (excluding goodwill) to fair value.
+ References
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|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
The amount of expense provided in the period for legal costs incurred on or before the balance sheet date pertaining to resolved, pending or threatened litigation, including arbitration and mediation proceedings.
+ References
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| - Definition
The amount of loss pertaining to the specified contingency that was charged against earnings in the period, including the effects of revisions in previously reported estimates.
+ References
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| - Definition
Amount of expected cost remaining for the specified restructuring cost.
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| - Definition
Discloses the amount charged against the accrued restructuring reserves, or earnings if not previously accrued, during the period for the specified type of restructuring cost.
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| - Definition
Amount of insurance proceeds for an event or transaction that is unusual in nature or infrequent in occurrence, or both.
+ References
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